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Case-IH STX 325 Engine specs

19 engine values on record for the STX 325.

Engine power, claimed · gross or net not stated

321 hp

239 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Case-IH STX 325”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

What engine is in the diesel STX 325?

The diesel STX 325 has a CUMMINS 6 TAA-9304, a 6-cylinder 8.85 L diesel engine. Fitted to STX 325.

Engine — CUMMINS 6 TAA-9304 specifications
Make & modelCUMMINS 6 TAA-9304Source 3
FuelDieselSource 3
Cylinders6Source 3
Displacement540.0 ci · 8.85 LSource 3
CoolingLiquid-cooled
Maximum torque1,062 lb·ft · 1,440 N·m
Maximum torque speed1,351 rpm
Air cleanerNelson dry air filter with pre-separator
Cylinders6
Displacement9.4 qt · 8.8 L
Bore4.5 in · 114 mm
Stroke5.7 in · 144.5 mm
Rated engine speed2,000 rpm
Torque rise38.6 %

Source · Traktorenlexikon, “Case-IH STX 325”

What engine is in an STX 325?

An STX 325 has a Case 6TAA-9304, a 6-cylinder 8.85 L engine. Fitted to STX 325 (Articulated 4 WD with dual wheels).

Engine — Case 6TAA-9304 specifications
Make & modelCase 6TAA-9304
Cylinders6
Displacement540.0 ci · 8.85 L
AspirationSupercharged

Source · OECD test report 1974, 2002

How much fuel does an STX 325 use?

On OECD Test 1974, the STX 325 used 17.20 gal/h (65.1 L/h) at maximum power.

OECD Test 1974 — STX 325 as tested, configuration as printed: “Articulated 4 WD with dual wheels”
Fuel consumption, at maximum power17.20 gal/h · 65.1 L/h
Fuel consumption, at rated engine speed16.09 gal/h · 60.9 L/h
Fuel consumption, at standard PTO speed16.09 gal/h · 60.9 L/h
Engine speed, at maximum power1,800 rpm
Engine speed, at rated engine speed2,000 rpm
Engine speed, at standard PTO speed2,000 rpm
Maximum torque1,062 lb·ft · 1,440.0 N·m
Torque rise38.6%

Source · OECD test report 1974, 2002

Sources and how this page was built

19 engine values from Traktorenlexikon, “New Holland TJ325”; Traktorenlexikon, “Case-IH STX 325”; and OECD test report 1974, 2002.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. OECD Code 2 test report 2/1 974: Case IH STX 325 — Licence not stated by the publisher; facts cited, OECD-1974 · published 2002-02-22 · retrieved 2026-09-14. OECD. Original document
  2. Traktorenlexikon: Case-IH STX 325 — CC BY-SA 4.0, WIKIBOOKS-TL-115862 · revision 985163. Wikibooks contributors (Traktorenlexikon). Original document
  3. Traktorenlexikon: New Holland TJ325 — CC BY-SA 4.0, WIKIBOOKS-TL-111245 · revision 993202. Wikibooks contributors (Traktorenlexikon). Original document